Posted by Gerald J. again on July 13, 2001 at 02:32:01:
In Reply to: Re: Re: Re: Yet another change to The Tuba Sound posted by Rick Denney on July 12, 2001 at 11:12:05:
How warm the air column in the horn is will affect harmonics the most. I computed some time ago that the velocity of propagation changed a quarter step between 70 and 98 °F. I'm sure a hot tuba isn't hot all the way through, and so the temperature gradient is going to affect he harmonics more than the fundamental. An argument for a short lead pipe to the valves.
While 3 dB is a great deal of change to instrumentation, its about the minimum level change detectable by ear.
Gerald J.